OK, here's my take. I did it on my resonator as all my electric gear is packed for a gig I have tomorrow. The resonator suits the track anyway.
Beautiful backing track, James, thanks so much for posting it here.
(
it's linked from this thread)
For those interested in the art of improvisation, I never bother thinking scales. I follow the chords. I discovered years ago that short cut to strong melody, which is what we're all searching for when we solo, is to make sure the main notes of the melody are the chord tones, which are of course the notes that make up each chord. They scatter themselves the length of the fretboard, and each time the chord changes, so do the chord tones. Then it's kind of a matter of joining the dots ... there's obviously a little more to it than that, but that's the gist of it.
The trick is seeing those chord tones and that's what
my book PlaneTalk teaches, a very compact of seeing them all there, ready for the twanging. Since I play
slide in standard tuning, the technique works for slide too.
Dinner time in Australia, gotta go!